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The days of eating vitamin C like snacks are long gone. According to a report from the UK, excessive intake of vitamin C, which is known to be beneficial to health, may actually have the opposite effect.
Excessive intake of vitamin C increases the antioxidant effect that prevents cell destruction in the body, but may have the opposite effect. In other words, it can damage the DNA of white blood cells that fight disease. After administering 500 mg of vitamin C tablets per day for 6 weeks to 30 adults (14 men, 16 women) and a placebo for the next 6 weeks, two types of proteins representing oxidative damage in DNA were identified. was compared. As a result, the level of 8-Oxoadenine, which indicates oxidative damage, was found to be higher during the 6 weeks of taking vitamin C than during the 6 weeks of taking placebo. Scientists warn that taking less than 500 mg of vitamin C a day is mainly due to its antioxidant effect, but if you take more than 500 mg, the opposite phenomenon may occur and the oxidation effect may become stronger.
Although more research is needed to accurately judge the effectiveness of taking vitamin C, it is true that serious questions have been raised about its effectiveness. Recently, dietary recommendations have been based on standards that are considered effective in warning American adults about nutritional deficiencies, and are based on the role of vitamins in disease prevention and health maintenance. For example, vitamins are recommended as a way to prevent heart disease, cancer, and cataracts, and to provide a partial antioxidant effect. The recommended daily limit of vitamin C for adults is 60 mg.
Research on the effects of vitamin C has continued, but its effectiveness has not yet been proven. For example, foods that contain a lot of vitamin C, such as vegetables and fruits, reduce the risk of various cancers, especially esophageal cancer, oral cancer, stomach cancer, lung cancer, and colon cancer, but the intake of vitamin C tablets has not been tested in clinical trials for stomach or colon cancer. The preventive effect has not been proven. Recent clinical trials have shown that in order to achieve the health effects of vitamin C, the dosage must be different when consumed as food and when taken as tablets.
Currently, the recommended intake of vitamin C from food is more than 200 mg per day through vegetables and fruits, and the optimal amount when purified is not to exceed 500 mg.
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